Memory heat sink device provided with extra heat sink area

ABSTRACT

A memory heat sink device provided with an extra heat sink area includes two cooling fins that are respectively attached to the front and back sides of a memory. A plurality of raised dots that protrude toward the front side are formed on the cooling fin attached to the front side of the memory. Each of the raised dots and the cooling fin has at least one sectional area and one connection portion. Thus, the heat sink area of cooling fin increases and the sectional area is used to easily dissipate heat generated by the memory in the manner of convection.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to a memory heat sink device provided with an extra heat sink area and particularly to a heat sink device provided with a cooling fin on which a plurality of raised dots that are stamped sectional ones.

2. Description of the Related Art

The operation speeds of computers becomes faster and faster day by day and thus memory devices generates more and more heat. If this problem is not solved effectively, computers are easy to shut down. Thus, the front and back sides of a memory are adhered with cooling fins opposite to each other. This is almost standardized in the arrangement of memories of computers.

There are quite many prior patents regarding two heat sink fins installed on a memory heat sink device. What is disclosed in the patents is the technology that solves the issue on buckling of two heat sink fins, or that provides a heat sink structure stretching upwards.

In most of the patents, the heat sink device is provided with planar metal cooling fins; only heat conduction works for heat dissipation, so the efficiency remains to be increased, and the technology of increment of the cooling fin area is also disclosed.

In Taiwan Patent No. M279165, “IMPROVED MEMORY COOLING FIN”, the outside surfaces of two clips are formed with special lines that are alternately convex and concave for increasing of the heat dissipation area. However, the cooling fin dissipates heat in the manner of heat conduction.

In Taiwan Patent No. M292738 with a title of “HEAT SINK STRUCTURE OF A MEMORY CHIP”, one of two sides of a heat-dissipating plate that touches a memory is formed with at least one protruding portion for increasing of the heat dissipation area. However, the cooling fin dissipates heat in the manner of heat conduction.

In Taiwan Patent No. M298165 titled with “HEAT SINK STRUCTURE OF A MEMORY”, a plurality of fins are formed at two outsides of a receptacle (the cooling fin) corresponding to a cross portion. However, the cooling fin dissipates heat in the manner of heat conduction.

In Taiwan Patent No. M303419 having a title of “HEAT SINK DEVICE FOR A MEMORY” that is the only one means dissipating heat in thermal convection, a plurality of heat dissipation vents are formed on the surfaces of two cooling fins. Although the effect of thermal convection increases in such a design, owing to the heat dissipation vents that form spaces, the area of cooling fin instead decreases and the dusts and foreign matters easily accumulates on the heat dissipation vents; there are still many defects in use.

Consequently, because of the technical defects of described above, the applicant keeps on carving unflaggingly through wholehearted experience and research to develop the present invention, which can effectively improve the defects described above.

SUMMARY OF THE INVENTION

To solve the above mentioned defects of prior art, a memory heat sink device provided with an extra heat sink area according to this invention is provided, comprising two cooling fins that are respectively attached to the front and back sides of a memory. A plurality of raised dots that protrude toward the front side are formed on the cooling fin attached to the front side of the memory. Each of the raised dots and the cooling fin have at least one sectional area and one connection portion. Thus, the heat sink area of cooling fin increases and the sectional area is used to easily dissipate heat generated by the memory in the manner of convection. Then, the raised dots increase the heat sink area on the cooling fin, and thus no large gap is caused and the dusts and foreign matters does not easily accumulate for achievement of better use.

In the memory heat sink device provided with the extra heat sink area according to this invention, the plurality of raised dots may be formed into arc-shaped sectional area the connection portions of which are vertical or horizontal, thereby they being in the form of fish scales.

In the memory heat sink device provided with the extra heat sink area according to this invention, the plurality of raised dots may be formed into sectional areas horizontal to each other, the symmetrical connection portions of which make the raised dots to be in arc.

In the memory heat sink device provided with the extra heat sink area according to this invention, the upper fringe of each of the cooling fins may also be formed with a tenon and a buckle structured with a clamp anchor.

In order to further know the features and technical means of this invention, refer to the following detailed description according to this invention accompanied with drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded view of a first embodiment of this invention;

FIG. 1 is an assembly view of FIG. 1;

FIG. 3 is an enlarged view of raised dots shown in FIG. 1;

FIG. 4 is a sectional view of the raised dots shown in FIG. 1;

FIG. 5 is an assembly view of a second embodiment of this invention;

FIG. 6 is a partially exploded view of a third embodiment of this invention;

FIG. 7 is an exploded view of a fourth embodiment of this invention;

FIG. 8 is an assembly view of FIG. 7;

FIG. 9 is an enlarged view of the raised dots shown in FIG. 7; and

FIG. 10 is a sectional view of the raised dots shown in FIG. 7.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Now, the present invention will be described more specifically with reference to the following embodiments. It is to be noted that the following descriptions of preferred embodiments of this invention are presented herein for purpose of illustration and description only; it is not intended to be exhaustive or to be limited to the precise form disclosed.

With reference to FIGS. 1 and 2, a memory heat sink device provided with an extra heat sink area according to this invention is provided, the memory heat sink device mainly comprises two cooling fins 11 and 12 that are respectively attached to the front and back sides of a memory 20. The cooling fins 11 and 12 may be adhered to the memory 20 by using glue. A main technical means of this invention is given for forming a plurality of raised dots 13 that protrude toward the front side on the cooling fin 11 attached to the front side of the memory. A plurality of raised dots 13 that protrude toward the back side may also be formed on the cooling fin 12 attached to the back side of the memory.

With reference to FIGS. 3 and 4, each of the raised dots 13 and the cooling fin 11 has at least one sectional area 14 and one connection portion 15. In the embodiment, each of the raised dots 13 is formed with an arc-shaped sectional area 14; and the connection portion 15 of the raised dot 13 is vertical, thereby it being in the form of a fish scale.

In this invention, the raised dots 13 are applied for increasing the whole thermal conduction area of cooling fin 11 and a gap caused by the sectional area 14 is used to dissipate heat in the manner of thermal convection. Thus, better heat dissipation works in this invention. Then, the gap between the raised dot 13 and the cooling fin 11 is small, so no dust and foreign matter accumulates.

A second embodiment of the present invention shown in FIG. 5 is similar to the first embodiment; the sectional area 14 of raised dot 13 has an arc shape and what is different is that the connection portion 15 is horizontally arranged.

An embodiment shown in FIG. 6 is similar to the former embodiment. However, tenons 111 and 121 and clamp anchors 112 and 122 are provided corresponding to the upper fringes of two cooling fins 11 and 12. The tenons 111 and 121 and the clamp anchors 112 and 122 may be wedged to each other. This invention is similar to what was disclosed formerly.

Further, in this invention, the raised dots 13 may also has another shape. Refer to FIGS. 7 and 8 that illustrate a fourth embodiment of the present invention. In the embodiment, two cooling fins 11 and 12 are also respectively attached to the front and back sides of a memory 20 and then the heat sink device is formed. With reference to FIGS. 9 and 10, the raised dot 13 is formed with two sectional areas 14 parallel to each other and two connection portions 15 symmetrical to each other, and thus the raised dot 13 is in arc protruding. In the embodiment illustrated in the figures, the two parallel sectional areas 14 may be horizontal or vertical.

While the invention has been described in terms of what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention needs not be limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures. 

1. A memory heat sink device provided with an extra heat sink area, comprising two cooling fins that are respectively attached to a front and a back side of a memory; a plurality of raised dots that protrude toward the front side being formed on the cooling fin attached to the front side of the memory, and each of the raised dots and the cooling fin have at least one sectional area and one connection portion.
 2. The memory heat sink device provided with the extra heat sink area according to claim 1, wherein each of the raised dots is formed with an arc-shaped sectional area and the connection portion is vertical.
 3. The memory heat sink device provided with the extra heat sink area according to claim 1, wherein each of the raised dots is formed with an arc-shaped sectional area and the connection portion is horizontal.
 4. The memory heat sink device provided with the extra heat sink area according to claim 1, wherein each of the raised dots is formed with two sectional areas parallel to each other and two connection portions symmetrical to each other, and thus the raised dot is in arc protruding.
 5. The memory heat sink device provided with the extra heat sink area according to claim 4, wherein the two parallel sectional areas are horizontal.
 6. The memory heat sink device provided with the extra heat sink area according to claim 4, wherein the two parallel sectional areas are vertical.
 7. The memory heat sink device provided with the extra heat sink area according to claim 1, wherein tenons and clamp anchors are provided corresponding to the upper fringes of two cooling fins and the tenons and the clamp anchors are wedged to each other. 